Rock-drilling machine.



Patent-,ea July- 25, 1911 P. LANGE.

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ROCK DRILLING MACHINE. APPLICATION FILED JAN.28, 1911.

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unire stares rpa'rnnr FICE RDCK-DRIIALNG MACHINE.

Specification of Letters Eatent.

Patented July 25, ieri.

rignal application filed February le, 1909, Serial No. 478,198, Divided and. this application filed January 28, 1911. Serial No. 605,275.

llc it known that l, PAUL LANGE, of Brien', a subject ol' the King of Prussia. and whose post-oiliee address is Brico', near lireslau, Prussia, German Empire, have invented new and useful Improvements in or Relatinp; to liocli-Diillinf r Machines, ot which t'ne following is a specification.

My invention relates to improvements in rock-drilling,r machines and more particularly to a flushing, device which permits of supplying the. flushing medium such as water or air, to the. boring tool without intei-tering' with the independent rotation of this tool, which improvements lhave been described by me in my application, Serial No. 478,196, filed Februaryr 16th, 1909, from which this present application has been divided.l

l' have illustrated my invention in theaccoinpanying` drawing which represents a longitudinal vertical section through a rock drilling machine.

In the casing 1 is arranged a motor which imparts quick rotaryinotion to the spindle 2. The motor itself can be any desired suitable motor, for instance an electric motor or a compressed air motor. The spindle 2 drives by means of a toothed wheel mounted on an intermediate spindle il, a cani disk 6 provided with interna-l teeth and cari-ying one, two or more cam surfaces 7. The cam disk G is mounted at the top and at the bottom in the machine :frame 10, by means ot' ballibearings 8 and 9,. In the saine machine frame 10 is mounted in a slidingI manner the liamnierll provided with a square block 12 and a guide rod 13. The block 12 is guided in sliding guides 14 and is provided with a roller 18 which is mounted by means of fixed ball bearings 15 and hall hearings 16 which are adjustable by means of screws 17. lic roller 18 engages with the cam surfaces of the cam disk during the" rotation of the latter and is raised and released hy them. A. spring 20.presses the hammer 11 downward, and a second spring` 21 acts as a buffer spring, elastically supportingr the lianin'ier by means ci aA pin 22 and a ring 23 secured to thehammer rod 13.4 lnibricatiiig1 cups 24C are provided forcliibiicating the movable parts;

Around the hammer 11 is rotatably mounted a sleeve 25 to which is keyed a toothed rim 2G. With the latter engages a s @fle tooth pinion 27 on the intermediate spindle 4. The pinion in question is arranged in such manner relatively to the 'cam disk 6 that` when the hammer 11 .is raised by means of the 'cam 7 `and 'roller 18, the sleeve 25 is turned tothe extent of one tooth oi? its toothed rim 2,6, While during the fall of the hammer it remains standing still. In the sleeve 25 is riftatably mounted 'a holder 30 for the drill or boringchisel 31. `The lat# ter is mounted in the. holder in a 'longitudinally adJustable manner by means 4of a square portion 32. Between the flanges of the sleeve 25 and the holder 301s "inserteda disk 33 of suitable material snclias rubber, y

leather, or the like, anda spring 34 presses the flanges against lthe disk in such manner that a friction clutch is produced, vihic li.preu vents any breaking; ofthe gear when the edge of the drill 31 gets-jammed- A cap 35 screwed on the sleeve 25, prevents the drill 31 from falling out. A ring 37 of 1an angle shaped cross-section is rotatably mounted between the bottom flange oft-he cap and alock ring, and packing rings 39 lclose the interior in a tight manner'. On the ring; 37 is mounted a hose union 40, and a similar hose union 41 is mounted on the Harige of the cap Another branch or union 42 is formed on or secured to the drill 3l. The drill is provided with a central perforation 43 extending from the branch 112 to its edge` which is not shown. A hose pipe 45 connects the branches Ll1 and L12 while to the branch 4.0 is connected the supply pipe for the rinsing medium which may be water iinder'pressure or compressed air. Thus the cap is formed into a rinsingr head with tight joint. The machine frame 1G carricsa holder 50, through which can be introdiiced,a pipe 51 which forms a handle when the machine is to beheld bythe workman during the drilline, or the machine could be securcdby moans of the same "in well known manner to a suitable frame or the like.

TWhatclaim is:

ln rock drillingmachine. the combina tion with a hammer and an intermittently rotating tool holder adapted to receive the tool and means ior causing' said hammer to strike against said tool: oan annular charn- 'bc'r at the oiiterfcnd of said holder adapted to contain liushinp; water, said chamber beinn' toined by. an annular groove in said holder and by a stationary ring surrounding Suid groove, the outer end of Said holder adapted to .rotate Within said stationary ring, a hose connection on said stationary ring for supplying flushing water to said chamber, the tool having a central boring adapted to conduct lushing water, and a flexible connection between said annular chamber and said tool boring eonn'uunieatlng Wlth sald borungA below the polnt Where 13 the tool 1s .attached to the holder.

PAUL LANGE.

VVtnesses:

SDIS H. KATZ, ERNST BLAISGH. 

